English: This logo consists of a red swirl, which is under a LGPLv3 or later,or, at your option, CC BY-SA 3.0, and a stylized word “debian”, which is apparently not copyrightable.
Swirl
The logo without “Debian” is released under the following common free software license:
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 3 of the License, or any later version. This work is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
GNU Lesser General Public LicenseLGPLhttps://www.gnu.org/copyleft/lgpl.htmltrue
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
The logo with “Debian” is released under the following license, due to ongoing concerns about trademarks.
This work includes material that may be protected as a trademark in some jurisdictions. If you want to use it, you have to ensure that you have the legal right to do so and that you do not infringe any trademark rights. See our general disclaimer. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required.See Commons:Licensing.
Copyright (c) 1999 Software in the Public Interest
Note: we would appreciate that you make the image a link to http://www.debian.org/ if you use it on a web page.
Captions
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